Supervisory apparatus.



PATENTED FEB; 1,1, 1908.

K. FRIEDLAENDER. SUPERVSORY APPARATUS.

APPLICATION FILED JAN. 31. 1306.

, on-rn WITNESSES "NEYS unirsi) srafrns PATENT onnion.

.KONRAD rnIEDLAhNnnn, or BnnLiN, GERMANY.

No. 873,791. Specification of Toall whom it may concern:

Be it known thatI, KONRAD FRIEDLAEN- bnn, naval officer, subject of the German Einperor,resi ling at Berlin, 7 Pariserstrasse, Germany, have invented certain new and useful Improvements in Supervisoi-y apparatus;v and Ido hereby declare the `.following to be a full, clearLand exact description of the invention, such as will enable others skilled in the art 'to which it apper- "ta'ins to make and use the saine.

'. f\ My invention refers to signaling apparatus vand has for its object to provide means for y. continually' exhibitinga visible sign indicatnaling devices and connecting them up in the manner hereinafter described in detail, by which they are made to glow just enough to be visible and thereby.v to continually indicate the readiness oi the apparatus, but when the latter is operated to 'light up and thereby. to provide light forthe guidance of the operator or other persons. I

The accompanying drawing is a diagrammatical illustration of the preferred manner .of carrying out my invention.

In the drawing is a battery or other suitable source of electrical current.

w is a resistance one end of which is attachedv to one terminal of the said battery and the other end of which contacts with the tongue c of a relay R. A short circuit s is arranged to shunt the resistance w and likewise to contact with c and the relay R is supposed to be arranged in such a manner that the tongue c is kept normally'in contact with w, that is as long as. the relay R remains inert.` But when it is excited by a current' passing through the conductors Z it shifts the tongue c and thereby causes it to contact with s.

Intlio building, vessel or other establishnated `by the indices 1 ffrefhrenee letters indicating the different parts l te ment that is. to be protected by the device forming the subject of my invention I* larrange signaling stations in suitable place romwhich it is desired to send alarm signals. In the example shown in the drawing three such stationsy are provided and are desig- 2, 3 attached to the of eachstation.

D is a button orother suitable contact de- Letters Patent. Patented Feb. 11, 1908.

Application filed January 3l` 1906A Serial No. 298.877.

' vie attached to the conductors 2,'1 and arranged to make a contact between them if operated by hand.

W is a bell or other suitablealarin signal and L is a glow-lamp. The bells VV', Wol" all the stations are connected in series on a conductor d which also contains the battery B and every bell is shunted by the corresponding lamp L. y

The operation of this arrangement is as `follows. The described example is the preferred form of execution of my invention in case itis to be employed for the pur ose of signaling a fire alarm. As has al1-ea( y been explained the tongue c normally contacts with the free end of the resistance w. The battery therefore continuously discharges current through the resistance w over the conductors d to "all therlain )s L and the re- 'sistance of the lamps and other parts is chosen in such a manner that the filaments of the lamps are kept at a dull red heat so as to make them just visible. They will therefore serve as a signal that there is current in the lines for anybody patrolling the building from one alarm station to the next. I also prefer to arrange the lamps L in proximity vof the buttons D so that they wil likewise serve-to make thosebuttons visible to the iire or from some other reason desires to station where he happens to be and thereb closes a contact between the conductors Z, Current then passes from the battery to the relay R and causes the tongue c to be shifted w. Thus the whole electromotive force of the battery is brought to bear upon the bells W', WV and the lamps L, L of the alarm stations and all the bells begin to ring and all the lamps are flighted up. By the light of the lamps placards P provided with an arrow ,showing the wa to the next water tap or the like can be ex ibited.

Havingl now particularly 'described and ascertained the nature of my said invention and -in what manner the same is to be performed I declare, that what I claim is:

tion with a source of electrical current of a resistance, a relay capable of shortcircuitingr said resistance, 'and a plurality of alarm stations comprising each an alarm device, a 'glow lamp shunting said alarm device and a contact button controlling said relay.

patrolling watchman. When he discovers' strike an alarm, he presses the button at any to s, thereby short-circuiting the resistance f 1. In signaling apparatus the combina- '2. In signaling apparatusl the combina tion with a battery connected in series with a number of alarm devices each being shunted by a glowlamp and with a resistance, ot' a relay controlled by a number of contact buttons disposed in the vicinity of `said alarm devices, and adapted to control ing the signaling devices and simultaneously lighting up the said lamps to deliver a signal to and illuminate the several stations.

4. In signaling apparatus the combination with a plurality of electrically actuated signaling` devices located at separate signal stations and. connected in series to a common battery, of glowlamps shunting each of said signaling devices, and means for increasing the electromotive force in the common battery circuit at will to deliver a signal to and illuminate the several stations.

5. In an alarm system, the combination with an alarm. device, of an. emergency index, a glow-lamp in proximity to said emergency index, means for keeping said lamp at a dull red heat, means for causing the lamp `t 0 light up when 'the said alarm device 1s dependent circuit for controlling .the alarm device; whereby under lnormal conditions the lamp indicates that the alarmcircuit is intact and when the alarmdevice is operated the lamp illuminates the emergency index; substantially as described.

6. In signaling apparatus the combination with a battery a resistance and plurality of bells connected in series with said battery and with said resistance and with glowlamps shunting each bell of a relay capable of shortcircuiting said resistance and of means to operate said relay such means being placed in the vicinity of said bells.

7 In an alarm system, a plurality of alarm stations, an alarm device and a glow lamp at ,each station, means for normally `keeping said lamps at a dull red heat, and means at each station capable of actuating all the alarm devices and' simultaneously lamps. I

In testimony whereof, I have alhxed my signature, 1n presence of tWo wltnesses.

KONRAD FRIEDLAENDER.

lVitnesses t i WOLDEMAR HAUPT, 'HENRY Hasrnn'.

operated, and contact mechanism in an inincreasing :the current* through the said 

